Taggart Transcontinental pays no dividends, but spent $4 billion on share repurchases last year. Taggart's equity cost of capital is 13% and the amount spent on repurchases is expected to grow by 5% per year. Taggart currently has 2 billion shares outstanding. Taggart's market capitalization is closest to:

A. $25 billion

B. $31 billion

C. $40 billion

D. $50 billion